@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');
@import url('https://cdn.jsdelivr.net/npm/remixicon@2.5.0/fonts/remixicon.css');

:root {
  --plasma-violet: #7B2FF7;
  --plasma-violet-dark: #5B1FC4;
  --plasma-violet-light: #A366FF;
  --quantum-cyan: #00E5D4;
  --quantum-cyan-dark: #00B8AA;
  --nebula-pink: #FF3D9A;
  --deep-space: #0B0E1A;
  --deep-space-light: #14182B;
  --slate-panel: #1C2138;
  --slate-border: #2E3454;
  --star-white: #F4F6FF;
  --mist-gray: #A8ADC7;
  --warn-amber: #FFB84D;
  --gradient-primary: linear-gradient(135deg, var(--plasma-violet) 0%, var(--nebula-pink) 100%);
  --gradient-tech: linear-gradient(135deg, var(--quantum-cyan) 0%, var(--plasma-violet) 100%);
  --gradient-dark: linear-gradient(180deg, var(--deep-space) 0%, var(--deep-space-light) 100%);
  --shadow-glow: 0 0 24px rgba(123, 47, 247, 0.35);
  --shadow-cyan-glow: 0 0 24px rgba(0, 229, 212, 0.35);
  --shadow-soft: 0 8px 30px rgba(11, 14, 26, 0.12);
  --shadow-card: 0 4px 20px rgba(11, 14, 26, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--deep-space);
  background-color: #FAFAFC;
  overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--deep-space-light);
}
::-webkit-scrollbar-thumb {
  background: var(--gradient-tech);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--plasma-violet);
}

/* Sticky Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--deep-space);
  border-bottom: 1px solid var(--slate-border);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.site-header .logo-text {
  background: var(--gradient-tech);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.nav-link {
  position: relative;
  color: var(--mist-gray);
  font-weight: 500;
  transition: color 0.25s ease;
  padding-bottom: 4px;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient-tech);
  transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--star-white);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Mobile Menu (NO display:none here — use Tailwind 'hidden' class in HTML) */
.mobile-menu {
  background-color: var(--deep-space-light);
  border-top: 1px solid var(--slate-border);
}

.mobile-menu .nav-link {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--mist-gray);
}

.mobile-menu .nav-link:hover {
  background-color: var(--slate-panel);
  color: var(--star-white);
}

.mobile-menu-toggle {
  color: var(--star-white);
  font-size: 1.75rem;
  cursor: pointer;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--gradient-primary);
  color: #FFFFFF;
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: 9999px;
  box-shadow: var(--shadow-glow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 0 36px rgba(123, 47, 247, 0.55);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--quantum-cyan);
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: 9999px;
  border: 2px solid var(--quantum-cyan);
  transition: all 0.25s ease;
  cursor: pointer;
}

.btn-secondary:hover {
  background-color: var(--quantum-cyan);
  color: var(--deep-space);
  box-shadow: var(--shadow-cyan-glow);
  transform: translateY(-2px);
}

.btn-dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--deep-space);
  color: var(--star-white);
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: 0.5rem;
  transition: all 0.25s ease;
  cursor: pointer;
}

.btn-dark:hover {
  background-color: var(--plasma-violet-dark);
  transform: translateY(-2px);
}

/* Cards */
.tech-card {
  background-color: #FFFFFF;
  border: 1px solid #E8E9F3;
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.tech-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-soft);
  border-color: var(--plasma-violet-light);
}

.tech-card .icon-wrap {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.75rem;
  background: var(--gradient-tech);
  color: #FFFFFF;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.tech-card-dark {
  background-color: var(--slate-panel);
  border: 1px solid var(--slate-border);
  border-radius: 1rem;
  padding: 2rem;
  color: var(--star-white);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.tech-card-dark:hover {
  transform: translateY(-6px);
  border-color: var(--quantum-cyan);
}

.tech-card-dark p {
  color: var(--mist-gray);
}

/* Grid Layouts */
.grid-auto-fit {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

/* Section backgrounds */
.section-dark {
  background: var(--gradient-dark);
  color: var(--star-white);
}

.section-dark h1, .section-dark h2, .section-dark h3 {
  color: var(--star-white);
}

.section-dark p {
  color: var(--mist-gray);
}

.section-gradient {
  background: var(--gradient-primary);
  color: #FFFFFF;
}

/* Accordion */
.accordion-item {
  border: 1px solid #E8E9F3;
  border-radius: 0.75rem;
  margin-bottom: 1rem;
  overflow: hidden;
  transition: border-color 0.25s ease;
}

.accordion-item:hover {
  border-color: var(--plasma-violet-light);
}

.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--deep-space);
  background-color: #FFFFFF;
  transition: background-color 0.25s ease;
}

.accordion-header:hover {
  background-color: #F5F3FF;
}

.accordion-header .accordion-icon {
  transition: transform 0.3s ease;
  color: var(--plasma-violet);
}

.accordion-header.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  display: none;
  padding: 0 1.5rem 1.25rem;
  color: #4B5169;
  background-color: #FFFFFF;
}

/* Forms */
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.85rem 1.1rem;
  border: 2px solid #E4E4EE;
  border-radius: 0.6rem;
  background-color: #FFFFFF;
  color: var(--deep-space);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  font-size: 1rem;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--plasma-violet);
  box-shadow: 0 0 0 4px rgba(123, 47, 247, 0.12);
}

.form-label {
  display: block;
  font-weight: 600;
  color: var(--deep-space);
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
}

.form-group {
  margin-bottom: 1.5rem;
  position: relative;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: #A0A3B8;
}

/* Loading spinner */
.spinner {
  width: 44px;
  height: 44px;
  border: 4px solid rgba(123, 47, 247, 0.15);
  border-top-color: var(--plasma-violet);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Pulse / Glow animation for tech accents */
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 12px rgba(0, 229, 212, 0.4); }
  50% { box-shadow: 0 0 28px rgba(0, 229, 212, 0.7); }
}

.pulse-glow {
  animation: pulse-glow 2.4s ease-in-out infinite;
}

/* Fade-in animation */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background-color: var(--deep-space);
  border-top: 2px solid var(--plasma-violet);
  color: var(--star-white);
  box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.3);
  padding: 1.5rem;
}

.cookie-banner h3 {
  color: #FFFFFF;
}

.cookie-banner p {
  color: var(--mist-gray);
}

.cookie-banner a {
  color: var(--quantum-cyan);
  text-decoration: underline;
}

.cookie-banner a:hover {
  color: var(--plasma-violet-light);
}

.cookie-btn-accept {
  background: var(--gradient-tech);
  color: var(--deep-space);
  font-weight: 700;
  padding: 0.65rem 1.5rem;
  border-radius: 9999px;
  transition: transform 0.25s ease;
}

.cookie-btn-accept:hover {
  transform: translateY(-2px);
}

.cookie-btn-decline {
  background: transparent;
  color: var(--mist-gray);
  border: 1px solid var(--slate-border);
  padding: 0.65rem 1.5rem;
  border-radius: 9999px;
  transition: all 0.25s ease;
}

.cookie-btn-decline:hover {
  color: var(--star-white);
  border-color: var(--star-white);
}

/* Hero */
.hero-tech {
  position: relative;
  background: var(--gradient-dark);
  overflow: hidden;
}

.hero-tech::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(123, 47, 247, 0.35) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-tech::after {
  content: '';
  position: absolute;
  bottom: -15%;
  left: -8%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 229, 212, 0.25) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

/* Badges */
.badge-tech {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: rgba(123, 47, 247, 0.1);
  color: var(--plasma-violet);
  font-weight: 600;
  font-size: 0.8rem;
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  border: 1px solid rgba(123, 47, 247, 0.25);
}

.badge-featured {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--gradient-primary);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.35rem 0.9rem;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Divider */
.divider-gradient {
  height: 3px;
  width: 80px;
  background: var(--gradient-tech);
  border-radius: 2px;
}

/* Static informational cards (no hover transform per rules) */
.static-card {
  background-color: #FFFFFF;
  border: 1px solid #E8E9F3;
  border-radius: 1rem;
  padding: 2rem;
  cursor: default;
}

.static-card.featured {
  border: 2px solid var(--plasma-violet);
  position: relative;
}

/* Footer */
.site-footer {
  background-color: var(--deep-space);
  color: var(--mist-gray);
  border-top: 1px solid var(--slate-border);
}

.site-footer h3,
.site-footer h4 {
  color: var(--star-white);
}

.site-footer a {
  color: var(--mist-gray);
  transition: color 0.25s ease;
}

.site-footer a:hover {
  color: var(--quantum-cyan);
}

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--slate-panel);
  color: var(--mist-gray);
  transition: all 0.25s ease;
}

.social-icon:hover {
  background: var(--gradient-tech);
  color: var(--deep-space);
  transform: translateY(-3px);
}

/* Utility */
.text-gradient {
  background: var(--gradient-tech);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.transition-all-smooth {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 768px) {
  .hero-tech::before,
  .hero-tech::after {
    width: 250px;
    height: 250px;
  }

  .tech-card, .tech-card-dark {
    padding: 1.5rem;
  }
}